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    ABSTRACT: INTRODUCTION Partial nitrification - the SHARON process In the search of improving the sustainability of nitrogen removal from wastewater, partial nitrification techniques have been denoted for quite a while as very promising. During partial nitrification, ammonia is converted to nitrite (eq. 1) and further oxidation of nitrite to nitrate is prevented, thus realizing aeration costs savings in comparison with conventional nitrification to nitrate. + - + + + + H 2 O H NO O 5 . 1 NH 2 2 2 4 (1) In the SHARON (Single reactor High activity Ammonia Removal Over Nitrite) process, partial nitrification is establishing by working at high temperature (about 35C) and maintaining an appropriate sludge retention time (SRT). The SHARON reactor is operated as a continuously stirred tank reactor (CSTR, chemostat) without biomass retention, so the sludge retention time equals the hydraulic retention time. The SHARON process is very well suited to reduce the load of streams with high ammonia conce
    08/2003;